It seems to me that the key logger only logs the keyboard activity. So the solution is to type in the incorrect order. So what if you type any number then use the mouse to reposition the cursor either before or after that number, type another number and again use the mouse to reposition where the next number is entered.
The key logger will record 12345678 but by moving where you actually enter the number you can enter 42718356.
Follow me? Will that work?